Home / 229,317.50-316,407.20-138,671.57

Finding the Fourth Proportional to 229,317.50, 316,407.20 and 138,671.57

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Solution

The fourth proportional to 229,317.50, 316,407.20 and 138,671.57 is: 191,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,317.50 : 316,407.20 = 138,671.57 : x
  2. Step 2: Convert to fraction form
    229,317.50/316,407.20 = 138,671.57/x
  3. Step 3: Cross multiply
    229,317.50x = 316,407.20 × 138,671.57
  4. Step 4: Simplify right side
    229,317.50x = 43,876,683,280.96
  5. Step 5: Solve for x
    x = 43,876,683,280.96/229,317.50
  6. Step 6: Final answer
    x = 191,335.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.